CN204775177U - Big load leveling landing leg based on ball - Google Patents
Big load leveling landing leg based on ball Download PDFInfo
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- CN204775177U CN204775177U CN201520547583.XU CN201520547583U CN204775177U CN 204775177 U CN204775177 U CN 204775177U CN 201520547583 U CN201520547583 U CN 201520547583U CN 204775177 U CN204775177 U CN 204775177U
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Abstract
The utility model discloses a big load leveling landing leg based on ball, hydraulic motor's output shaft is connected with the input shaft of solid reduction gear, the one end of pinion shaft and the output shaft coaxial coupling of reduction gear, the other end is connected with the stopper, the suit is fixed with the pinion on the pinion shaft, all pass through deep groove ball bearing transition fit between pinion shaft and mount pad and the connecting seat, on the vice nut of ball coaxial be provided with axial and circumference fixed a position just with little gear engagement's gear wheel, on the nut cover be equipped with with nut normal running fit and in the axial spacing nut cover subassembly, nut cover subassembly links firmly with the connecting seat, the one end of the vice lead screw of ball has linked firmly spherical end, spherical end sets up in the spherical groove of base, and it is spacing by the flange end cover of the spherical groove open end of base, the lead screw passes through the vice cooperation of rolling guide with the mount pad, the utility model discloses axial bearing capacity height, high transmission efficiency, follow -up precision be high, compromise the lateral load, and the auto -lock unblock is reliable.
Description
Technical field
The utility model belongs to leveling vehicle technical field, particularly a kind of large load leveling supporting legs based on ball-screw.
Background technology
High maneuverability car is requisite military equipment in modern military.Radar vehicle automatic horizontal control system is the important component part of of high maneuverability car, plays decisive role to the raising measurement performance of radar and the maneuverability of vehicle.Leveling supporting legs is the important composition parts of radar vehicle automatic horizontal control system, is mainly used in support and the lifting of car load, and effective locking that can realize in leveling process and highly reliable unlocking function.
At present, the automatic horizontal control system of domestic development mainly adopts hydraulic ram or T-shaped screw mandrel as supporting leg, owing to letting out in hydraulic ram and hydraulic valve, is difficult to keep level angle constant for a long time after system leveling, need constantly to carry out leveling to system, affect work efficiency.Although T-shaped screw mandrel does not exist leakage problem and have the characteristic of self-locking, screw pair is cliding friction, and driving efficiency is lower.
Utility model content
The purpose of this utility model is to provide that a kind of axial carrying capacity is high, driving efficiency is high, servo-actuated precision is high, take into account lateral loading, and self-locking unlocks the large load leveling supporting legs of failure-free based on ball-screw.
The technical solution realizing the utility model object is:
A kind of large load leveling supporting legs based on ball-screw, comprise mount pad and Connection Block that protection and support are provided, mount pad and Connection Block are connected, mount pad is fixedly installed retarder, the output shaft of HM Hydraulic Motor is connected with the input shaft of retarder, one end of pinion shaft is coaxially connected with the output shaft of retarder, the other end is connected with drg, on pinion shaft, suit is fixed with miniature gears, pinion shaft and between mount pad and Connection Block all by deep groove ball bearing transition fit, drg is fixedly installed on Connection Block, the nut of ball screw assembly, is coaxially arranged with and is all located and the big gear wheel engaged with miniature gears at axial and circumferential, nut is set with and coordinates and Nut sleeve component spacing in the axial direction with nut rotation, Nut sleeve component and Connection Block are connected, one end of the leading screw of ball screw assembly, is fixed with spherical termination, spherical termination is arranged in the spherical groove of base, and it is spacing by the flange end cap of the spherical groove open end of base, leading screw is coordinated by rolling guide-rail pairs with mount pad.
The utility model compared with prior art, its remarkable advantage:
(1) the utility model adopts ball screw assembly, leveling precision is high, in ball screw assembly, power and motion are transmitted by free rolling ball between leading screw and nut, this type of drive instead of leading screw and the nut direct effect mode of motion thread lead screw pair, thus the cliding friction of traditional leading screw is instead of with minimum friction of rolling, ball screw assembly, driving efficiency is made to reach more than 90%, the drive torque of whole transmission is reduced to about 1/3 of lead screw, and therefore heat generation rate is also significantly reduced.
(2) ball screw assembly, heat generation rate of the present utility model is low, and temperature rise is little, and ball screw assembly, can take prestension to leading screw and the measures such as pretension elimination endplay in the course of processing, makes lead screw pair have high positioning precision and repetitive positioning accuracy.
(3) the utility model can only bear axial load due to ball-screw, can not bear radial weight, and therefore adopt rolling guide-rail pairs to bear radial load, supporting leg can bear larger lateral pull.
(4) the utility model is provided with spherical support seat in ball-screw lower end, with state of ground from Row sum-equal matrix angle, can realize automatic capturing within the scope of light grade, guarantee that supporting leg is well stressed.
(5) the utility model selects nut rotary type ball screw assembly, and HM Hydraulic Motor and ball-screw adopt mode in parallel simultaneously, significantly reduces the longitudinally height of actuating unit.By gear pair transmission, decrease the driving torque on input shaft and brake torque, the specification of selected HM Hydraulic Motor, retarder and drg reduces all accordingly, thus saves installation occupation of land space.
(6) the utility model adopts hydraulic brake to realize the quick lock in of ball-screw, can realize the snap catch to axle, reliable working performance in axle rotary course.
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the positive TV structure cutaway view of the utility model based on the large load leveling supporting legs of ball-screw.
Fig. 2 is the plan structure cutaway view of the utility model based on the large load leveling supporting legs of ball-screw.
Fig. 3 is the side-looking structure cutaway view of the utility model based on the large load leveling supporting legs of ball-screw.
Detailed description of the invention
Composition graphs 1 to Fig. 3:
A kind of large load leveling supporting legs based on ball-screw of the utility model, comprise mount pad 5 and Connection Block 7 that protection and support are provided, mount pad 5 and Connection Block 7 are connected, mount pad 5 is fixedly installed retarder 2, the output shaft of HM Hydraulic Motor 1 is connected with the input shaft of retarder 2, one end of pinion shaft 3 is coaxially connected with the output shaft of retarder 2, the other end is connected with drg 8, on pinion shaft 3, suit is fixed with miniature gears 4, pinion shaft 3 and between mount pad 5 and Connection Block 7 all by deep groove ball bearing 6 transition fit, drg 8 is fixedly installed on Connection Block 7, the nut 12 of ball screw assembly, is coaxially arranged with and is all located and the big gear wheel 10 engaged with miniature gears 4 at axial and circumferential, nut 12 is set with Nut sleeve component 11 with nut 12 normal-running fit and spacing in the axial direction, Nut sleeve component 11 and Connection Block 7 are connected, one end of the leading screw 9 of ball screw assembly, is fixed with spherical termination 14, spherical termination 14 is arranged in the spherical groove of base 16, and it is spacing by the flange end cap 15 of the spherical groove open end of base 16, leading screw 9 is coordinated by rolling guide-rail pairs with mount pad 5.
Leading screw 9 and the spherical termination 14 of ball screw assembly, are connected by butt flange 13.
The leading screw 9 of ball screw assembly, is connected with non-friction guide 18 by connecting panel 19, mount pad 5 is provided with the slide block 17 with the corresponding bearing fit in non-friction guide 18 position.
The keyway that on circumferential by it between the nut 12 of ball screw assembly, and big gear wheel 10, correspondence position is arranged respectively and flat key 20 realize the location in circumference.
Principle of work of the present utility model:
When needs leveling, rotated by hydraulic energy source hydraulic control motor 1, HM Hydraulic Motor 1 rotates through retarder 2 Drive pinion axle 3, and pinion shaft 3 miniature gears 4 drives big gear wheel 10 to rotate, because big gear wheel 10 and nut 12 are rigidly connected, big gear wheel 10 drives nut 12 to rotate.
This structure selects nut rotary type ball screw assembly, and its working process is as follows: relative to leading screw 9 rotary motion when nut 12 works, while move axially; Relative to the motion of leading screw 9 non rotating when Nut sleeve component 11 works, only move axially.Therefore, through the driving of big gear wheel 10, Nut sleeve component 11 can drive Connection Block 7 to carry out upper and lower straight-line motion, the whole height of adjustment supporting leg.In working process, Connection Block 7 is rigidly connected with radar vehicle or platform, so by the adjustment to each height of landing leg, realize the adjustment of the levelness of radar vehicle or platform.
In real work, realize the locking and unlocking problem after radar vehicle or platform leveling by drg 8.In working process, drg 8 can realize the snap catch to pinion shaft 3 in pinion shaft 3 rotary course, reliable working performance.Drg 8 realizes by the 3MPa pressure oil that hydraulic energy source provides the braking and the disengagement that control pinion shaft 3, and during release, friction lining is by spring application, and pinion shaft 3 is braked fixing; During supercharging, friction lining is separated throws off, and pinion shaft 3 can rotate freely.
In real work, the rotative speed that ball-screw accurately controls to be mainly reflected in leading screw 9 is lower, to reach the requirement of leveling precision.If HM Hydraulic Motor 1 and leading screw 9 adopt the mode of direct connection, need the cycloid roller motor selecting low speed, high pulling torque, this motor Volumetric efficiency under speed operation extremely low (being less than 50%).So the leading screw 9 of HM Hydraulic Motor 1 and ball screw assembly, is adopted mode in parallel by this programme, pass through double reduction, reduce the minimum speed of input torque and raising motor, select axial piston motor, this motor still has higher Volumetric efficiency (more than 90%) and stability under slow speed of revolution operating mode.
In real work, between spherical termination 14 and base 16, adopt ball pivot connection mode, with state of ground from Row sum-equal matrix angle, automatic capturing within the scope of light grade can be realized, guarantee that supporting leg is well stressed.
In real work, the rolling guide-rail pairs consisted of slide block 17 and guide rail 18 bears radial load, and supporting leg can bear certain transverse load.
Claims (5)
1. the large load leveling supporting legs based on ball-screw, it is characterized in that: comprise mount pad (5) and Connection Block (7) that protection and support are provided, mount pad (5) and Connection Block (7) are connected, mount pad (5) is fixedly installed retarder (2), the output shaft of HM Hydraulic Motor (1) is connected with the input shaft of retarder (2), one end of pinion shaft (3) is coaxially connected with the output shaft of retarder (2), the other end is connected with drg (8), the upper suit of pinion shaft (3) is fixed with miniature gears (4), pinion shaft (3) and between mount pad (5) and Connection Block (7) all by deep groove ball bearing (6) transition fit, drg (8) is fixedly installed on Connection Block (7), the nut (12) of ball screw assembly, is coaxially arranged with and is all located and the big gear wheel (10) engaged with miniature gears (4) at axial and circumferential, nut (12) is set with nut (12) normal-running fit and Nut sleeve component spacing in the axial direction (11), Nut sleeve component (11) and Connection Block (7) are connected, one end of the leading screw (9) of ball screw assembly, is fixed with spherical termination (14), spherical termination (14) is arranged in the spherical groove of base (16), and it is spacing by the flange end cap (15) of the spherical groove open end of base (16), leading screw (9) is coordinated by rolling guide-rail pairs with mount pad (5).
2. the large load leveling supporting legs based on ball-screw according to claim 1, is characterized in that: leading screw (9) and the spherical termination (14) of described ball screw assembly, are connected by butt flange (13).
3. the large load leveling supporting legs based on ball-screw according to claim 1 and 2, it is characterized in that: the leading screw (9) of described ball screw assembly, is connected with non-friction guide (18) by connecting panel (19), mount pad (5) is provided with the slide block (17) with the corresponding bearing fit in non-friction guide (18) position.
4. the large load leveling supporting legs based on ball-screw according to claim 1 and 2, is characterized in that: the keyway that on circumferential by it between the nut (12) of described ball screw assembly, and big gear wheel (10), correspondence position is arranged respectively and flat key (20) realize the location in circumference.
5. the large load leveling supporting legs based on ball-screw according to claim 3, is characterized in that: the keyway that on circumferential by it between the nut (12) of described ball screw assembly, and big gear wheel (10), correspondence position is arranged respectively and flat key (20) realize the location in circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520547583.XU CN204775177U (en) | 2015-07-24 | 2015-07-24 | Big load leveling landing leg based on ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520547583.XU CN204775177U (en) | 2015-07-24 | 2015-07-24 | Big load leveling landing leg based on ball |
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| Publication Number | Publication Date |
|---|---|
| CN204775177U true CN204775177U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520547583.XU Active CN204775177U (en) | 2015-07-24 | 2015-07-24 | Big load leveling landing leg based on ball |
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| CN (1) | CN204775177U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423074A (en) * | 2015-12-09 | 2016-03-23 | 武汉科技大学 | Power arm for multi-degree-of-freedom pose adjusting platform |
| CN105840964A (en) * | 2016-06-03 | 2016-08-10 | 北京航天发射技术研究所 | Lifting mechanism |
| CN106184142A (en) * | 2016-09-25 | 2016-12-07 | 威海高登旅游休闲用品有限公司 | A kind of caravan trailer parking supporting leg |
| CN106814030A (en) * | 2017-01-16 | 2017-06-09 | 中国石油大学(北京) | Rock direct shear friction experiment levelling device |
| CN107654799A (en) * | 2017-11-08 | 2018-02-02 | 苏州大学 | Wind-tunnel wind resistance tests the ground leg structure of locating platform |
| CN108675167A (en) * | 2018-07-31 | 2018-10-19 | 武汉武桥交通装备技术有限公司 | A kind of levelling mechanism for being applied to climb arch loop wheel machine |
| CN108757879A (en) * | 2018-05-25 | 2018-11-06 | 太原理工大学 | A kind of hydraulic-machinery combined driving device |
| CN113321142A (en) * | 2021-06-22 | 2021-08-31 | 贵州航天特种车有限责任公司 | High-precision planet roller screw leveling supporting leg |
-
2015
- 2015-07-24 CN CN201520547583.XU patent/CN204775177U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423074A (en) * | 2015-12-09 | 2016-03-23 | 武汉科技大学 | Power arm for multi-degree-of-freedom pose adjusting platform |
| CN105840964A (en) * | 2016-06-03 | 2016-08-10 | 北京航天发射技术研究所 | Lifting mechanism |
| CN106184142A (en) * | 2016-09-25 | 2016-12-07 | 威海高登旅游休闲用品有限公司 | A kind of caravan trailer parking supporting leg |
| CN106184142B (en) * | 2016-09-25 | 2019-03-29 | 威海高登旅游休闲用品有限公司 | A kind of caravan trailer parking supporting leg |
| CN106814030A (en) * | 2017-01-16 | 2017-06-09 | 中国石油大学(北京) | Rock direct shear friction experiment levelling device |
| CN106814030B (en) * | 2017-01-16 | 2019-07-02 | 中国石油大学(北京) | Levelling device is used in the experiment of rock direct shear friction |
| CN107654799A (en) * | 2017-11-08 | 2018-02-02 | 苏州大学 | Wind-tunnel wind resistance tests the ground leg structure of locating platform |
| CN108757879A (en) * | 2018-05-25 | 2018-11-06 | 太原理工大学 | A kind of hydraulic-machinery combined driving device |
| CN108675167A (en) * | 2018-07-31 | 2018-10-19 | 武汉武桥交通装备技术有限公司 | A kind of levelling mechanism for being applied to climb arch loop wheel machine |
| CN113321142A (en) * | 2021-06-22 | 2021-08-31 | 贵州航天特种车有限责任公司 | High-precision planet roller screw leveling supporting leg |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |